JPH07503393A - Active dynamic seat device - Google Patents

Abstract

PCT No. PCT/EP93/00761 Sec. 371 Date Jan. 24, 1994 Sec. 102(e) Date Jan. 24, 1994 PCT Filed Mar. 29, 1993 PCT Pub. No. WO93/19647 PCT Pub. Date Oct. 14, 1993.An active dynamic seat has a base, an intermediate piece linked to the base and a seating part linked to the intermediate piece. The seating part is fixed to the intermediate piece and the intermediate piece is linked to the base by a single bearing in a substantially fixed manner in the vertical direction and in a tilting manner in all lateral directions. The tilting movement is limited in all directions by a stop and one or several restoring devices are provided to restore the unloaded intermediate piece to the vertical.

Description

[Detailed description of the invention] Active dynamic seat device The invention relates to an active motor having the features as indicated in the preamble of claims 1 and 17. The present invention relates to a target sheet device.

Conventional chairs generally have a seat surface and a seat shaped to correspond to the body, especially the back. The backrest is designed to support you in the most anatomically favorable position possible. has been done. Although this type of seating often feels comfortable, A crucial problem with offspring is that their bodies merely sit passively. sand In other words, only static "pressure" is applied to the intervertebral discs without using the back muscles. It's ino. Therefore, if this type of seat device is used for a long period of time, , degeneration of the back muscles and wear and tear of the intervertebral discs. Using this type of static and passive seating This often results in health problems and pain in the back and lumbar region (e.g. Occurs if

For this reason, so-called active and dynamic seating systems have been developed. It was. In this seat device, the back muscles and intervertebral discs are always in a state of slight movement. This movement In any case, the seat is held in an unstable position and the seat is held in an unstable position. Furthermore, this is made possible by the action of a spring that acts in the vertical direction as required.

As a dynamic seat device of this kind, for example, German Patent No. 7311140 There is something disclosed in the issue. The seat section in this seat device has a first swinging hinge. The support shaft is connected to the support shaft by a second swing hinge. It is connected to the legs of the seat device. Each hinge is preferably located at the end of the support shaft. The hemisphere is guided inside a hollow cylindrical member, and the hemisphere is It is biased in one direction by a coil spring within the member.

The hemispherical body has a flat bottom surface, so the cylindrical part remains unloaded. It is in contact with the bottom of the material and the lid. As a result, under no load, the legs and support shafts and the seat portion is perfectly aligned. A load is applied to this seat device. When the coil springs of both hinges are compressed together, both spheres respond. The swinging action of the two hinges pushed into the cylindrical part is caused by the opening of the lid of the lower cylindrical part and and the diameter of the opening at the bottom of the upper cylindrical part is slightly larger than the outside diameter of the support shaft. achieved by.

However, when a load is applied to each hinge, the maximum inclination angle of each hinge is The distance that the flat surface of the hemisphere is separated from the bottom and lid of the It is right. For this reason, it is difficult to maintain balance with conventional seat devices, and If the user is unfamiliar with this seat device, at least one hinge should be made non-swivelable. Needs to be locked. The above point is that the swing hinge of the seat device leg should be oriented appropriately. When the upper swing hinge is changed in the same way, the orientation of the upper swing hinge is also changed in the same direction. It becomes clear when you look at it.

The purpose of the invention is to ensure that the user is seated in a dynamically acted position, and to It can be used safely without long-term training, that is, familiarization training. The object of the present invention is to provide a seat device capable of

Another object of the invention is to provide a seating device that is simple to manufacture and has low manufacturing costs. There is a particular thing.

The invention aims to achieve the above-mentioned object with the features of claims 1 and 17. It is.

Firm connection between the seat part and the intermediate member of the seat device according to the invention, and the intermediate member The directionally operable connection between the base and the legs on the one hand is an active Guarantees smooth seating action. These connections on the other hand move the intermediate member and Use only one tilting joint in connection with the device for restoring the seat part This allows the seat device to provide a longer familiarization period, even for virtually untrained people. It is certain that it will be used without any delay. Because the seal according to the present invention The degree of instability of the balance of the seat device is higher than that of conventional active dynamic seat devices. This is because there is no such thing.

This return device can be used, for example, as a rocking metal that can be used simultaneously as a tilting joint or is formed as an element mounted in such a way as to add spring action to the intermediate member. can be done.

According to a further aspect of the invention, the intermediate member has vertical vertical grooves to improve seating comfort. It is possible to provide a spring action.

In a further aspect of the invention, the fixed intermediate member is pre-mounted at the lower end of the intermediate member. A plurality of holes are provided on the outer side of the plate. hanging through the hole. A straight-extending pin is retained within or on the leg. The diameter of the pin is the diameter of the hole. The plate of the intermediate member is smaller than the diameter and extends vertically so as to be located above the hole. A coil spring is arranged.

In this embodiment, the coil spring imparts a vertical spring action to the intermediate member. , and at the same time allows tilting movement of the intermediate member. In this case, the maximum inclination angle is This is determined by appropriate selection of the diameter of the hole and the diameter of the bottle. and The maximum angle of inclination does not depend on the weight of the user of the seat arrangement, as mentioned above.

Further aspects of the invention are set out in the dependent claims.

The present invention will be explained in detail in accordance with the embodiments shown in the figures.

FIG. 1 shows a first embodiment of a seat device according to the present invention.

FIG. 2 shows the embodiment of FIG. 1 with an added return device.

FIG. 3 shows a second embodiment of the seat device according to the invention.

FIG. 4 shows a third embodiment of the seat device according to the present invention.

FIG. 5 shows a fourth embodiment of the seat device according to the present invention.

FIG. 6 shows a fifth embodiment of the seat device according to the present invention.

FIG. 7 shows a sixth embodiment of the seat device according to the present invention.

For the seat device according to the invention, the embodiment shown in FIG. It is formed from an intermediate member 2 and one sheet part 3.

The leg 1 comprises an essentially hollow conical base portion 4 or a plurality of legs, preferably It is formed from five legs. The walls of the base part 4 are double, which makes the inside Formed in the sky. The upper ends of the inner and outer walls of the hollow conical part are directly connected to each other by a regulating ring 5. has been done.

The intermediate member 2 is connected to the bottom of the base part 4 by a resilient elastic element 6. The elastic element 6 with zero elasticity, which is Ensures a tiltable connection of the intermediate part 2 and, at the same time, of the unloaded hollow cylindrical part. Allows return to neutral position. In this case, the resilient elastic element 6 is It is formed as a moving metal.

The intermediate member 2 is formed from a lower hollow cylindrical member 7 and an upper hollow cylindrical member 8. ing. The lower hollow cylindrical member 7 is arranged on the elastic element 6 and It is firmly connected to component 6. The outer diameter of the upper hollow cylindrical member 8 is basically that of the lower part. This corresponds to the inner diameter of the hollow cylindrical member 7. Therefore, the upper hollow cylindrical member is is moved vertically within a hollow cylindrical member.

The upper end of the upper hollow cylindrical member 8 is firmly connected to the plate 9 of the seat portion 3. Ru. A cushion 10 is arranged at the upper end of the upper hollow cylindrical member 8. Cushion The tube 13 is formed, for example, from a foamed plastic material covered with fabric, and optionally is removably fixed to the plate 9. Addition of anatomically suitable sheet retention performance The cushion 10 can be formed convex, concave, flat, or wedge-shaped to suit the requirements. Ru. When forming a wedge, the higher end of the wedge is placed behind the seated person. Should be.

In an even more advantageous embodiment, the cushion is designed to improve the maintenance of a sitting position. Aggregates with a stable shape to essentially retain the desired shape even under load conditions. will be provided.

A coil spring 11 is arranged inside the hollow cylindrical member of the intermediate member 2.

The coil spring is connected to the plate 9 of the seat part 3 or the upper hollow cylindrical member by its upper end. Move the intermediate sole placed horizontally in 8 until its lower end is on the elastic element 6. or on an intermediate base disposed horizontally within the lower hollow cylindrical member 7.

Inside the coil spring 11 is a rod 12 connected to the plate 9 of the seat portion 3. It is extending. The rod 12 extends beyond the lower end of the coil spring and includes a washer 13 and a rod. The biasing force of the coil spring is controlled by the nut 14 on the male screw provided at the lower end of the door 12. Adjustment becomes possible. This method allows the vertical spring action characteristics of the seating device to be Adjusted as necessary.

The height of the seat is determined by inserting a spacer washer between the elastic element 6 and the washer 13. You can change it in an easier way.

From the seat device to the seat portion 3 and the connecting portion of the intermediate member 2 to the seat portion 3 In order to prevent the washer 15 from falling off, the washer 15 is secured by a retaining device not shown in detail. It is detachably connected to the elastic element 6 or the lower hollow cylindrical member 7.

However, this problem may arise, for example, if the upper hollow cylindrical member 8 extends at least in the vertical direction. This problem can also be solved by providing an elongated hole that extends. The long hole has a lower hollow circle. A rod or a bottle is arranged in the cylindrical member 7. In this case, the seat part 3 and upper and lower stops for vertical movement of the upper hollow cylindrical member 8. If so, form a long hole that matches it and place the rod appropriately in the long hole. It can be set by

Although it is obvious, it is also possible to form the leg portion 1 into any shape. However, that Regarding the shape, the stability of the seat device is guaranteed, and the shape is the best shape of the intermediate member 2 in the above method. For example, the legs may have multiple legs arranged in a star shape. Wear. The legs extend above the intermediate member to limit tilting movement at the upper ends of the legs. connected to the edge.

Furthermore, a plurality of rollers are provided on the leg portion 1 by a known method to facilitate position adjustment of the sheet device. placed in order to do so.

In another embodiment, the leg 1 has a convex shape with its lower end slightly protruding downward. Similarly, the embodiment also reduces the movement of the seat device by reducing the contact surface with the floor surface. make it easier. For that, the circumference of the leg is approximately 50cm to 60cm in diameter. Contact areas are provided at intervals of approximately 0.5 cm to 1 cm, and this slight contact is The convex surface of the tactile surface is adapted to act on the desired sheet.

Although it is obvious that any changes may be made to the first embodiment of the present invention, they are described below. It can also be combined with further embodiments to be described in turn.

2 shows a further version of the embodiment according to FIG. 1 6 In the embodiment according to FIG. 2 an unloaded intermediate member 2 and the unloaded seat part 3 to return to the neutral position, a device 16 is added. There is. In this case, the return device 16 is fixed to the outer periphery of the lower hollow cylindrical member 7. It is formed from a resilient traction element 17. The traction element 17 is It is drawn into the interior of the base part 4 through a corresponding opening in the inner wall of the base part 4.

Inside the base part, the traction elements, for example rollers, can be Element 18 ensures that the traction element is essentially parallel to the inner and outer walls of the base part. The direction is changed so that it extends to . Each end of the traction element 17 is similar The coil spring 19 is connected to a coil spring 19 disposed inside the base part 4. Coil bar The springs 19 in this case preferably pull the intermediate part 2 in its neutral position.

It is obvious that the return device can also be formed in other ways, and that You can also choose not to place it in

If such a return device 16 attached to the intermediate member 2 is used, directional operation can be performed easily. At the same time, instead of a resilient elastic element 6 that creates a restoring moment. , the intermediate member 2 can be arbitrarily connected to the leg portion 1 by bearings. Intermediate member 2 can be any The tilting motion in the direction is not obstructed.

The embodiment of the invention shown in FIG. 3 is basically the embodiment according to FIG. 1 in function. corresponds to

The decisive difference is that the leg 1 is constructed in a different manner. this is the base part 20 and an external hollow cylindrical member 21. The base part 20 is a sheet It is provided with several legs, preferably five, to ensure the stability of the device. external A hollow cylindrical member 21 surrounds the intermediate member 2. Intermediate member 2 and sheet part 3 is the same as the corresponding part of the above embodiment.

Preferably, the hollow cylinder member 7 of the lower part of the intermediate member 2 is arranged at equal intervals from the circumferential surface of the hollow cylindrical member 7. Several devices are installed to return the intermediate member 2 and seat portion 3 to the neutral position. I'm being kicked. Said return device is preferably formed by a coil spring 22.

The coil spring 22 is in this case connected to the lower hollow cylindrical member 7 and the outer hollow part of the base part 20. It is arranged in the radial direction between the shaped cylindrical member 21.

The coil spring 22 is then held by a retaining or fixing device, not shown in detail. These are connected. Coil spring 22 can act as a compression spring. , by appropriately selecting the spring constant, the neutral position of the unloaded intermediate member and seat Guarantees return to position.

At the same time, the tilting movement of the intermediate member is constrained by the coil spring 22 to the maximum permissible angle.

On the other hand, due to the dimensioning of the coil spring and in some cases elastic elements 6, that is, due to the dimension setting of the return device, the unstable balance characteristics of the seat part 3 can be prevented. The characteristics of the active and dynamic seat position are also specified.

Instead of using the coil spring 22, the return movement is made possible by an annular rubber membrane plan. Become. The rubber membrane plan connects the outer hollow cylindrical member 21 and the lower hollow cylindrical member 7. conclude.

In the embodiment of the invention shown in FIGS. 3.4 and 5, the coils of the intermediate member 2 The device shown in FIG. 1 for pretensioning the spring 11 is omitted. the Such types of devices can obviously be used in conjunction with these embodiments.

In order to prevent the seat part 3 from falling off from the seat device, the upper and lower coil springs 11 are Both ends are connected to the plate 9 of the seat part and the bottom of the lower hollow cylindrical member 7 and the fixing device (not shown). omitted) in a simple way.

In order to prevent the interior of the seat device from becoming dirty, the upper edge of the outer hollow cylindrical member 21 and the seat The intermediate space between the seat part 3 and the plate 9 is formed by a flexible and/or elastic strip. Covered by a rib, for example pleated animal skin or a rubber sleeve. to this At the same time, pinch your fingers between the upper edge of the external hollow cylindrical member 21 and the lower surface of the plate 9. Danger is avoided.

The embodiment of the invention shown in FIG. 4 comprises an intermediate member 2. The embodiment of the invention shown in FIG. intermediate member The upper region of 2 is basically the same as the middle member of the embodiment described above. A return device is installed in this area of the upper intermediate member formed by the cylindrical member. Since the lower hollow cylindrical member 7 is not equipped with a stopper, the lower hollow cylindrical member 7 is It also moves inside the shaped cylindrical member 8.

At the lower part of the upper hollow cylindrical member 8, a region connected to the lower hollow cylindrical member 7 is provided. The intermediate member 2 includes a bearing member 30. In the bearing, the member 30 has a spherical shape, i.e. In this case, the diameter of the 0 sphere, which has a spherical shape with the upper and lower parts cut off by horizontal planes, is suitable. is selected to be larger than the lower hollow cylindrical member 7.

The bearing member 3o is connected to the cylindrical member 31 on the lower surface of the lower hollow cylindrical member 7. A suitable circular plate 32 is disposed on the lower surface of the cylindrical member 31.

The leg 1 is formed as a cylindrical hollow body with an opening in the center of the upper wall.

The bearing of the intermediate member 2 is inserted into the opening via a suitably formed ring 34. It is located. Ball bearings formed in this way and consisting of only one ball are thereby This allows the intermediate member 2 and the seat portion 3 to be tilted in any direction. It's obvious However, other bearings may be incorporated instead of the ball bearings of the above embodiments. said axis The receiver allows a tilting movement of the intermediate member, e.g. in the upper wall of the leg. is suspended in a double cardan system.

In order to return the unloaded intermediate member 2 to the neutral position, a The plate 32 of an intermediate member 2 comprises a plurality of plates, preferably formed as helical springs. A return device 35 is attached. This coil spring is preferably a circular plate 3 It extends radially and obliquely from 2. In addition, the return function of the coil spring is Based on the dimensional setting of the spring 35, as mentioned above, the unstable balance of the seat device and thereby determine the characteristics of the active dynamic seat position.

However, the return function is achieved by, for example, an annular rubber membrane plan that forms concentric circles. You can also get The rubber membrane plan includes a circular plate 32 and a cylindrical hollow body of the leg part 1. 31 are connected to each other.

The lateral restriction of the tilting movement of the intermediate member 2 can be achieved in this embodiment by a number of different For example, the height of the cylindrical member 31 and the diameter of the circular plate 32 are 0.

At the maximum inclination of the tilting movement, the peripheral area of the circular plate 32 reaches the upper wall 33 of the leg 1 can be selected to touch the bottom surface of the The bearing is located at the diameter and bottom of the member 30. The diameter of the hollow cylindrical member 7 is selected appropriately, and the bearing ring 34 is appropriately formed. For example, the lower edge of the lower hollow cylindrical member 7 is in contact with the upper edge of the ring 34. There are fewer restrictions on the maximum slope of the tilting movement.

In the embodiment of the invention shown in FIG. 5, the intermediate member 2 is preferably a circular prism. Mounted on rate 40.

The leg 1 is in this embodiment formed simply from a preferably circular plate 42. The circular plate 42 is the same as the circular plate 40 in a more preferred embodiment. with a diameter.

The intermediate member 2 is connected to an annular member placed on a circular plate 42 via a circular plate 40. It is arranged on an elastically compressible element 41. This element 41 is an example It can be formed by a rubber tube filled with air or liquid, or it can be made of foamed rubber or may be formed from similar materials.

The upper part of the seat device from the circular plate 42 and the elastically compressible element 41 or in some cases an elastically compressible element to prevent the minute from falling out. A traction device 43 is provided to enable traction of the ment 41. Traction device 4 3 is a flexible element 4 fixed on the surface of a circular plate 42 at its center; It is formed from 4. The element 44 protrudes from the center hole of the circular plate 40. , is held on the upper surface of the circular plate 40 by a holding device 45. In this case, the retainer The position 45 can simultaneously adjust the traction of the elastically compressible element 41 steplessly. .

Obviously, instead of a single centrally arranged retaining device 45, one, for example a circular plate, can be used. Several traction devices partitioned through the circumference of rates 40 and 42 are also provided. .

The stop for the lateral tilting movement of the intermediate member 2 is in this embodiment of the invention The elastic element 41 is determined depending on the most compressed state.

In contrast to the above embodiments of the invention, the embodiment shown in FIG. A spacer member 2 is provided. The intermediate member 2 is arranged at the cylindrical member 50 and the lower end of the cylindrical member 50. It is formed from a preferably circular plate 51.

The leg 1 is formed as a hollow cylindrical body, with an opening 52 in the center of its upper wall. 6 legs are provided, and the diameter of the opening is selected to be larger than the outer diameter of the cylindrical member 50. The circular plate 51 of the intermediate member 2 inside the intermediate member 1 has a plurality of vertically extending plates on its outer edge. A hole 55 is provided. The holes 55 are preferably evenly spaced. in hole 55 A vertically extending, preferably cylindrical pin 53 is arranged. Pin 53 is The ends thereof are directly connected to the upper and lower walls of the leg portion 1, respectively. The tilting movement of the intermediate member 2 In order to make this possible, the outer diameter of the pin 53 is reduced by a predetermined value to The inner diameter of the hole 55 is selected to be smaller than the inner diameter of the hole 55 of No. 1.

A vertical spring action is applied to the intermediate member 2, and at the same time the intermediate member is neutralized in an unloaded state. A circular plate 51 is placed on a coiled spring 54 to ensure return to position. be done. The pin 53 extends inside the coil spring 54. When the intermediate member 2 is tilted Generate sufficient free movement in the vertical direction depending on the external area of the circular plate 51 Therefore, there is also a coil spring 54 between the upper wall of the leg 1 and the upper surface of the circular plate 51. is placed.

The dimensions of the coil spring 54 are set appropriately to account for the unstable balance characteristics of the seat device. It is confirmed that In this case, the coil spring 54 can be pulled depending on the case. . In addition, if necessary, the upper and lower coil springs 54 can be connected radially to each other. They can also be placed facing each other.

The restriction of the lateral tilting movement of the intermediate member 2 is preferably circular in this embodiment. The diameter of the hole in plate 51 is based on the diameter of pin 53 extending through the hole. This is done by adjusting so that the maximum permissible tilt angle is not exceeded. This allows maximum The angle of inclination becomes independent of the load of the seat device and the weight of the user.

Also in this embodiment, the legs 1 and the plate 51 are not necessarily formed circularly. There's no need.

Rather, both parts of the leg 1 and the plate 51 can be shaped in a star-shaped manner in a known manner. Ru. The spring-loaded bearings described above can then be attached to some or all of the star-shaped axes. placed so that it fits within the room.

A final embodiment of the invention is shown in FIG. Its characteristics are shown in Figures 1 and 4. For this reason, which will become clear from the combination of examples, the following description is The principles of this embodiment are limited.

As shown in FIG. 7, the intermediate member 2 is an annular rubber membrane 60. is held in a preferably circular opening in the center of the leg 1. rubber membrane 60 can be considered in this case as an annular rocking metal with appropriate spring characteristics. Ru. The swinging metal makes the intermediate member 2 basically rigid in the vertical direction, and can be moved in any horizontal direction. It is held in the leg part 1 so as to be tiltable in the direction. At the same time, the rubber membrane 60 Arrangements for the return of unloaded intermediate members and seat parts to their (vertical) neutral position. It fulfills the function of positioning.

In order to adjust the return force characteristics, a rubber membrane 60 is provided on the boundary surface with the intermediate member 2. An annular inclined surface or shape 61 is provided. This creates an annular shape at the boundary with the intermediate member. A cut groove is provided.

A ring 62 having a conical outer surface is fitted into this cut groove. 62 is fixedly fitted onto the intermediate member 2 or fixed with a screw.

by fixing with or unfastening another screw, or by other suitable means. means (e.g. a nut 63 threaded onto an intermediate member disposed on the ring 62). The position of the ring 62 is adjustable. Depending on the vertical position of the ring 62 , the ring 62 adheres to the rubber membrane 60 and holds it at different strengths (vertically and horizontally). This adjusts the stiffness required for the spring action of the membrane. Ru.

The restriction of the lateral tilting movement of the intermediate member can be achieved, for example, in the leg 1 under the rubber membrane 60. This is done by means of a restricting ring 64 arranged. Restriction ring on some arms 65 It is connected to the legs.

In addition, the seat part 3 in this embodiment is provided with a backrest 3a. The backrest is secure improve seating comfort, but without degrading the active dynamic seat position. It is of a slight height.

■ Figure 4 Figure 5 international search report international search report

Claims (1)

[Claims] 1. A leg, an intermediate member connected to the leg, and a seam connected to the intermediate member. In the active dynamic seat device, the seat part (3) is firmly attached to the intermediate member. (2) and the intermediate member (2) is vertically oriented by a single bearing. The leg (1) is basically rigid in the horizontal direction, but tiltable in any lateral direction. The tilting movement in the lateral direction is restricted by the stopper, and the tilting movement in the lateral direction is restricted by the stopper. one or more return devices for returning the intermediate member to the vertical direction; A seat device characterized by: 2. Said intermediate member (2) is connected in each direction via a flexible connecting element (6). and the connecting element (6) can be used as a return device at the same time. The seat device according to claim 1, characterized in that: 3. The connecting element (6) is formed as a rocking metal. The sheet device according to claim 2. 4. The rocking metal is formed as an annular rocking metal (60), and the rocking metal is formed as an annular rocking metal (60). The intermediate member (2) is held in the opening of the leg (1) through the hole (60). The seat device according to claim 3, characterized in that: 5. The intermediate member (2) is provided with a plate (40) on the lower surface, and the plate (40) is Elastically compressible elements (41) arranged essentially circularly on the legs (1) 2. The seat device according to claim 1, wherein the seat device is arranged on the top of the sheet. 6. The elastically compressible element (41) is filled with air or liquid. 6. A seat device according to claim 5, characterized in that it is formed as a tube. 7. The intermediate member is suspended by a double cardan system at the legs. The seat device according to claim 1, characterized in that: 8. The intermediate member (2) includes a bearing member (30) and a bearing ring (3) of the intermediate member. 4) is arranged in the leg part (1) by a ball bearing consisting of: The sheet device according to claim 1. 9. Below the bearing point, the area of said intermediate member (2) has at least one return The system according to claim 7 or 8, characterized in that the system is connected to a return device (35). boot device. 10. a return attached to the intermediate member above the bearing point of said intermediate member (2); Claims 1 to 3, characterized in that at least one device (16) is provided. 9. The sheet device according to any one of 9. 11. Said return device (16) is arranged at least partially inside the leg (1). The seat device according to claim 9 or 10, characterized in that: 12. The return device (16) is an elastic belt, a coil spring, or a spring. It is formed from a combination of these constituent elements and inelastic elements. The seat device according to claim 12, characterized in that. 13. It is characterized in that said intermediate member (2) is formed with a vertical spring action. The sheet device according to any one of claims 1 to 11, characterized in that: 14. The intermediate member (2) is an upper hollow cylindrical member connected to the seat part. (8) and a lower hollow cylindrical member (7), both hollow cylindrical members are expandable and contractible. A coil spring (11) is disposed within the hollow cylindrical member, freely and closely associated with each other. The coil spring is connected to the lower surface of the seat part and the bottom of the lower hollow cylindrical member (7) or An intermediate bottom disposed within the upper hollow cylindrical member (8) and within the lower hollow cylindrical member (7). 14. The seat device according to claim 13, wherein the seat device abuts an intermediate sole disposed in the seat device. . 15. 15. According to claim 14, the coil spring (11) is tractioned. sheet equipment. 16. The leg (1) has an intermediate member (2) at a predetermined height above the bottom. ) is provided in the form of a closed lip (5). The sheet device according to any one of claims 1 to 15, characterized in that: 17. a leg, a fixed intermediate member connected to the leg, and a fixed intermediate member connected to the intermediate member. In an active dynamic seat device consisting of a seat part, the seat part (3) is an intermediate member ( 2), and the intermediate member (2) has a plate (51) on the lower surface. a plurality of vertically extending holes are provided in the outer region of the plate, and a plurality of vertically extending holes are provided in the outer region of the plate; A bottle (53) extends, and the bottle has its upper and lower ends vertically connected to the leg (1) or the leg. the diameter of the bottle is smaller than the hole; A coil spring (54) is attached to at least one of the upper and lower sides of the plate (51). A seat device characterized in that: 18. The coil springs (54) arranged above and below the plate (51) are 18. The sheets according to claim 17, characterized in that they are arranged radially opposite each other. Device. 19. 18. or claim 17, characterized in that the coil spring (54) is towed. 19. The sheet device according to 18. 20. The seat part (3) is fixedly or releasably connected to the seat part. a cushion (10), said cushion being flat, convex, concave, or wedge-shaped; The system according to any one of claims 1 to 19, characterized in that the system is formed in a boot device. 21. The cushion (10) has a basically stable shape even when a load is applied. 21. The sheeting device according to claim 20, comprising an aggregate having: 22. The leg portion (1) has a convex contact surface whose lower surface slightly protrudes downward. The sheet device according to any one of claims 1 to 21, characterized in that: .